Hearing aid method for in-situ occlusion effect and directly transmitted sound measurement
First Claim
1. A hearing aid for measurement of in-situ occlusion effect or directly transmitted sound, said hearing aid comprising:
- a first microphone adapted to generate a first input signal from sounds external to a user of the hearing aid;
a signal processing means;
a receiver; and
a second microphone adapted to generate a second input signal from sounds in the occluded ear of the user;
said signal processing means being adapted to generate a hearing loss compensated electric output signal from said first input signal, and said receiver being adapted to produce an acoustic output signal from said electric output signal; and
said hearing aid being adapted to selectively enter a measurement mode, in which said mode receiver is silent and said signal processing means is adapted to produce at least one occlusion effect value or at least one directly transmitted sound value from the difference between simultaneously generated sound levels of the second and the first input signals.
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Accused Products
Abstract
A hearing aid (100) comprises at least one first microphone (10) generating a first input signal from sounds external to a user of the hearing aid, signal processing means, a receiver (30) and, a second microphone (40) generating a second input signal from sounds in the occluded ear of the user. In a measurement mode the signal processing means produces an occlusion effect value or directly transmitted sound value from the difference between the sound levels of the second and the first input signals generated both at the same time while the receiver is silent. The invention further provides a system and a method for determining an occlusion effect and a directly transmitted sound value.
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Citations
20 Claims
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1. A hearing aid for measurement of in-situ occlusion effect or directly transmitted sound, said hearing aid comprising:
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a first microphone adapted to generate a first input signal from sounds external to a user of the hearing aid; a signal processing means; a receiver; and a second microphone adapted to generate a second input signal from sounds in the occluded ear of the user; said signal processing means being adapted to generate a hearing loss compensated electric output signal from said first input signal, and said receiver being adapted to produce an acoustic output signal from said electric output signal; and said hearing aid being adapted to selectively enter a measurement mode, in which said mode receiver is silent and said signal processing means is adapted to produce at least one occlusion effect value or at least one directly transmitted sound value from the difference between simultaneously generated sound levels of the second and the first input signals. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A hearing aid system for measurement of occlusion effect or directly transmitted sound, the system comprising a pair of a first hearing aid for one ear of a user and a second hearing aid for the other ear of the user, wherein said first hearing aid comprises:
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a first microphone adapted to generate a first input signal from sounds external to a user of the first hearing aid; a first signal processing means; and a first receiver; wherein said second hearing aid comprises; a second microphone; a second signal processing means; and a second receiver; said first signal processing means being adapted to generate a hearing loss compensated electric output signal from said first input signal, and said first receiver is adapted to produce a first acoustic output signal from said electric output signal; and wherein said system is adapted to selectively enter a measurement mode wherein said second microphone is adapted to generate a second input signal from sounds in the occluded ear of the user, said second receiver is silent and one of said first or second signal processing means is adapted to produce at least one occlusion effect value or at least one directly transmitted sound from the difference between simultaneously generated sound levels of the second and the first input signals. - View Dependent Claims (8, 9, 10, 11)
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12. A method for measurement of in-situ occlusion effect or direct transmission sound by means of a hearing aid having a first microphone for generating a first input signal from sounds external to a user of the hearing aid and a receiver, said method comprising the steps of:
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generating a hearing loss compensated output signal from said first input signal output by the receiver in a normal hearing aid mode; switching said hearing aid from said normal hearing aid mode into a measurement mode, causing said receiver to be silent, and carrying out the following steps; simultaneously generating said first input signal and a second input signal, wherein said second input signal is generated by a second microphone from sounds in the occluded ear of the user; and calculating at least one occlusion effect or directly transmitted sound value from the difference between the sound levels of said second and first input signals. - View Dependent Claims (13, 14, 15)
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16. A method for fitting a hearing aid to a user, said hearing aid having a first microphone for generating a first input signal from sounds external to a user of the hearing aid and a receiver, said method comprising the steps of:
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generating a hearing loss compensated output signal from said first input signal output by the receiver in a normal hearing aid mode; switching said hearing aid from said normal hearing aid mode into a measurement mode, causing said receiver to be silent, and carrying out the following steps; simultaneously generating said first input signal and a second input signal, wherein said second input signal is generated by a second microphone from sounds in the occluded ear of the user; calculating at least one occlusion effect or directly transmitted sound value from the difference between the sound levels of said second and first band-split input signals; and fitting said hearing aid based on at least one of said occlusion effect value and said directly transmitted sound value.
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17. A method for vent size determination for a hearing aid by means of in-situ occlusion effect measurement,
said hearing aid having a first microphone for generating a first input signal from sounds external to a user of the hearing aid and a receiver, said method comprising the steps of: -
providing an ear of a user with a prospective hearing aid, said prospective hearing aid occluding said ear of the user; generating a hearing loss compensated output signal from said first input signal output by the receiver in a normal hearing aid mode; switching said hearing aid from said normal hearing aid mode into a measurement mode, causing said receiver to be silent, and carrying out the following steps; simultaneously generating said first input signal and a second input signal, wherein said second input signal is generated by a second microphone from sounds in the occluded ear of the user; calculating at least one occlusion effect or directly transmitted sound value from the difference between the sound levels of said second and first input signals; and determining the vent size for said hearing aid based on at least one of the calculated occlusion effect and the directly transmitted sound value. - View Dependent Claims (18, 19)
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20. A system for measurement of in-situ occlusion effect or directly transmitted sound by use of a hearing aid, the hearing aid having a first microphone adapted to generate a first input signal from sounds external to a user of the hearing aid;
- a signal processing means;
a receiver; and
a second microphone adapted to generate a second input signal from sounds in the occluded ear of the user;
said signal processing means being adapted in a normal hearing aid mode to generate a hearing loss compensated electric output signal from said first input signal, and said receiver being adapted to produce an acoustic output signal from said electric output signal;
said system comprising a data processing system; and
a computer program, which when executed on said data processing system enables the system to switch said hearing aid from said normal hearing aid mode into a measurement mode, causing said receiver to be silent, and carrying out the following steps;simultaneously generating said first input signal and a second input signal, wherein said second input signal is generated by a second microphone from sounds in the occluded ear of the user; and calculating at least one occlusion effect or directly transmitted sound value from the difference between the sound levels of said second and first band-split input signals.
- a signal processing means;
Specification